Afr-heating stove



(No Model.)

W. TUTTLE v AIR. HEATING STOVE. No. 354,994. Patented Dec, 28', 1886.

\A/i-messes, l M Inventor,

2W 5 J I simply the wall 0, ordinarily termed a jack-' llN TE STATES" PATENT ()rrrcn.

WILLIAM TUTTLE, OF DOWVAGIAC, MICHIGAN.

AlR-H EATING STOVE.

SPECIFICATION forming part of Letters Patent N0.354,994, dated December 28,1886.

Application filed December 15, 1885. Serial No. 185,708. (No model.)

To all whom it may concern.

Be it known that I, WILLIAM TUTTLE, a citizen of the United States, residing at Dowagiac, county of Cass, State of Michigan, have invented a new and useful Air-Heating Stove, of which the following is a specification.

This invention relates to that classof stoves which have air-passages between the fire-box and the exterior inclosure or jacket of the stove; and it has for its object certain improvements below described. and claimed,

In the drawings forming a pa rt of this specification, Figure l is a vertical section on line 2 2 in Fig. 3; Fig. 2, a vertical section on line 3 3 in Fig. 4; Fig. 3, a cross-section on lines 0 O in Figs. 1 and 2; Fig. 4, a cross-section on lines 1 1 in Figs. 1 and 2; and Fig. 5 is a side View, looking from a point at the left hand of Figs. 2 and 4,with portions of the stove broken away, showing a change in construction, hereinafter described.

Referring to the letters marked on the drawings, B is the interior fire-place of the stove, the lower part of which is ordinarily termed the fire-box but for convenience of description I shall term the whole fireplace B the fire-box.

The ordinary grated bottom is shown at u. The front draft is shown at c, the door at v, the rear damper or draft at c, the stove-base at F, and P is the ash-pit.

The two walls 0 D, having a heat-space, r, between them, constitute the exterior inclosure of the stove, leaving a vertical air-passage, A, on both sides of the fire-box B, between said fire-box and inclosure.

The well-known object of the air-passages A A is to allow the air to circulate from below the stove up through the passages and out into the room at the openings at the top of the stove. (See the arrows in these passages A A in Fig. 2.) If the stove were provided with et, the air in the passages would be heated only by the radiationfrom the heated surface of the fire-box wall, and the wall 0 would be comparatively cool or contracted with the wall D in my construction, which is heated by the fire and heat entering the heat-space 1' between the walls 0 D. Furthermore, the wall 0 is also heated by the fire and heat in said heatspaces, for which reason the air in the passages A A receives an additional heat. -Of course the outer wall, D, surrounds the stove, Fig. 4, while the walls 0 inclose the air-passages on the sides of the fire-box. V

The fire-box, near the top, is provided with a partition, a, separating the heat-space r from the fire-box, the angled part being per-v forated at t, and provided with a damper, e, to regulate the draft of the fire-box, Fig. 1.

The arrows in the heat-space r in the different figures show the course of the heat and smoke.

The design is that when the fire is first made the draft 0 is left open and the'draft a closed. When the fire gets to burning, the draft will be largely direct, as indicated by the arrows in the firebox in Fig. 4; but when the fire is under good headway the draft 0 is closed and the draft 0 opened, when the draft will be what I term a return-draft, as shown by the arrows in the fire-box in Fig. 3, the fire and heat then all entering the heat-space r, as shown by the arrows in said space in Figs. 3 and 4. I 7

Of course the drafts and dampers may be arranged to produce different results and degrees in the draft, as desired and which use may suggest.

I should have stated that the heat-spaces 1" do not communicate'with each other on the back end of the stove until they get above the damper e, as the drawings show. These heatpassages r are only on the sides of the firebox, the ordinary air-passage being between said passages and the fire-box, and the forward end of the heat-passages 1" opens into the fire-box, said open end receiving the heat, as before explained, when draft 0 is closed and draft a is open. The heat-spaces may be provided with a bridge or partition, It, as in Fig.

5, to retard the passage of the heat, if desired.

In this use the door 12 would be at the opposite end of the stove, and the course of the heat is shown by arrows in Fig. 5. The partitions R are approximately vertically central in the space or passage, and are preferably at an oblique angle. They serve as deflectors to the rising heat, retarding the passage of the same, causing it to be longer in passing throughout the passages to the draft-pipe.

ICO

Having thus described my invention, what passages being closed from the fire-box and I claim as new, and desire to secure by Letters the other end of said passages opening into the Patent, isfire-box, substantially as set forth.

In an air-heating stove, the combination of In testimony of the foregoing I have here- 15 5 a fire-box, a Wall on each side, inclosing, in unto subscribed my name in presence of two izonjunction with the fire-box wall, an air-space Witnesses.

eading vertically through the stove, and an 1 outer wall encircling the stove and separated I WILLIAM TD TTLE' from the outer wall of the airspaces, forming \Vitnesses: 1o heat-passages on the sides of the stove only, DUMQNI. A. SnEPARDsoN,

the lower portion of the rear end of the heat E. G. SOUTHARD. 

